package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
public class DishServiceimpl implements DishService {

    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Override
    @Transactional
    public void addWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);

        Long dishId = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();

        if(flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor -> {dishFlavor.setDishId(dishId);});
        }

        dishFlavorMapper.insertBatch(flavors);
    }

    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {

        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }

    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        //判断当前菜品是否在起售中
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if(dish.getStatus() == StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        //判断当前菜品是否关联套餐
        List<Long> list_ids = setmealDishMapper.getSetMealIdsByDishIds(ids);
        if(list_ids != null && !list_ids.isEmpty()){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        for (Long id : ids) {
            dishMapper.deleteById(id);
            dishFlavorMapper.deleteById(id);
        }
    }

    @Override
    public DishVO getByIdwithFlavor(Long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor> list = dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();

        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(list);
        return dishVO;
    }

    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);

        dishFlavorMapper.deleteById(dish.getId());
        List<DishFlavor> flavors = dishDTO.getFlavors();

        if(flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            dishFlavorMapper.insertBatch(flavors);
        }

    }

    @Override
    public List<Dish> getByCategoryId(Long id) {
        Dish dish = new Dish();
        dish.builder()
                .categoryId(id)
                .status(StatusConstant.ENABLE)
                .build();
        List<Dish> list = dishMapper.getByCategoryId(dish);
        return list;
    }

    @Override
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishes = dishMapper.getByCategoryId(dish);
        List<DishVO> dishVOes = new ArrayList<>();
        for (Dish dish1 : dishes) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(dish1, dishVO);
            List<DishFlavor> FlavorbyDishId = dishFlavorMapper.getByDishId(dish1.getId());
            dishVO.setFlavors(FlavorbyDishId);
            dishVOes.add(dishVO);
        }
        return dishVOes;
    }
}
